Acer Ferrari One 200 Acer Ferrari One 200 Service Guide - Page 145

5. Ensure that all volume controls are set mid range: a. Click the volume icon on the taskbar and drag the slider to 50. Ensure that the volume is not muted. b. Click Mixer to verify that other audio applications are set to 50 and not muted. 6. Navigate to Start´ Control Panel´ Hardware and Sound´ Sound. Ensure that Speakers are selected as the default audio device (green check mark). NOTE: If Speakers does not show, right-click on the Playback tab and select Show Disabled Devices (clear by default). 7. Select Speakers and click Configure to start Speaker Setup. Follow the onscreen prompts to configure the speakers. 8. Remove and recently installed hardware or software. 9. Restore system and file settings from a known good date using System Restore. If the issue is not fixed, repeat the preceding steps and select an earlier time and date. 10. Reinstall the Operating System. 11. If the Issue is still not resolved, see "Online Support Information" on page 165. Internal Microphone Failure If the internal Microphone fails, perform the following actions one at a time to correct the problem. Do not replace non-defective FRUs: Start OK Check M/B Mic. cable OK Check MIC wire of LCD module Re-assemble the NG MIC cable to M/B OK Swap MIC wire of NG LCD module Swap M/B Microphone Problems If internal or external Microphones do no operate correctly, perform the following actions one at a time to correct the problem. Chapter 4 135